Polarized relay



July' 15 1924.

POLARIZED RELAY Filed Oct. 1G 1920 Patented July 15, 1924.

UNITEDl STATES .PATENT GFFCE.

Nom. H. LYsoNs, OFMONTREALLQUEBEC, CANADA, AssrCNoR To WESTERN ELECTRIC COMPANY, INCORPORATED, or NRW YORK, N. Y., A CoRroRaTroN or NRW YoRR.

POLARIZED RELAY.

Application led October 16, 1920. Serial No. 417,486.

To all 'whom it may conce/rn:

Be it. known Vthat .L'NonL H. LYsoNs, a subject of the King of Great Britain, residing at Montreal, in the Province of Quebec, Dominion of Canada, have invented certain new and useful Improvements in Polarized Relays, of which the following is a full, clear, concise, and eXact description.

This invention relates to improvements in polarized relays. The object is to produce a polarized relay which is simple and has strong mechanical construction; it avoids the difficulties presented by the pivoted armatures of previous types which continually require adjustment. The relay of this invention is easily adjusted and once properly adjusted remains in that state for a long period of time.

The relay is built up of a plurality of cores attached to a common base by any usual fastening means. Cn each of these cores is wound magnetizing coils. Associated with each core is an armature. These armatures are carried by bars of non-magnetic material that are supported by resilient sheet metal strips attached to the base fastening means of the cores. This allows the armatures to oseillate as they are attracted or repulsed by the cores according as they are magnetizcd in different directions. The armatures are magnetically connected by a yoke which moves in a plane parallel to the plane substantially of the pole face of the permanent magnet and at almost constant distance therefrom. The contact springs are carried by the core supporting means and they are adjusted by means of screws in the plate supported by the cores.

For a more complete understandingof the invention, reference may be made to the accompanying drawing which is a perspective view of a polarized relay embodying the invention. 1 is a common base to which all cores 3 are attached by fastening means 2. On the cores 3 are wound the magnetizing coils 4 whose ends are connected with terminals which extend through the base 1. Armatures 5 are connected to bars 6 which are of non-magnetic material. These bars are supported by resilient strips 7 which are attached to the core fastening means 2. The armatures 5 are magnetically connected by yoke 8. Contact springs 11 carrying contact points 12 are attached to the fastening means 2. Plate 13 which holds spring adjusting screws 141 is carried by the cores y3. 15 is an adjusting screwcarried by a core for limiting the movement of the armatures.

Coils 4 are connected in series in electric circuit in which reversals of current occur. This causes the reversal of the magnetic lines of force in cores 3. Magnet 9 being a permanent one magnetizes armature 51 and -gives it a certain polarity. Consequently when the coils are connected into the circuit mentioned above, the armature will be attracted by the cores having a. polarity corresponding to that of the armature and repelled by those having a polarity opposite thereto. Thus as the reversals of the current in the circuit take place, the armature oscillates.

What is claimed is:

1. A polarized relay comprising a permanent magnet, a plurality of cores, a winding for each core, a plurality of armatures, and a yoke magnetically connecting the armatures movable lengthwise and in a plane substantially parallel to the pole face of the permanent magnet.

2. A polarized rela-y comprising a plurality of cores on each of which is wound an energizing coil, a plurality of armatures parallel to said cores, means for magnetizing said armatures with a fixed lpolarity and a yoke magnetically connecting the armatures and arranged to move in a plane substantially parallel to the pole face of said magnetizing means.

3. A polarized relay comprising a plurality of electromagnets having core members, an armature parallel to and co-operating with each of said magnets, a yoke connecting said armatures, and means for magnetizing said yoke.

4. A polarized relay comprising a plurality of electromagnets having spaced cores, armatures parallel to and cooperating with said cores, a yoke connecting said armatures and means for magnetizing said yoke, said magnetizing means having a pole face with a surface nearly equal to that of said yoke and disposed in a plane parallel to that of said yoke.

5. In a relay, a permanent magnet, a plurality of electromagnets, a plurality of armatures controlled thereby, and a magnetic member interconnecting the armatures and movable therewith across the pole face of the permanent magnet, the air gap between magnets, tensioned armatures controlled thereby, acljustabie contacts associated with the armatures, a -member interconnecting the armatures, an adjusting member mounted on one of the cores for Varying the air gap between the armatures and the cores, and` a resilient member for varying;- the tension on the armatures.

In Witness whereof, hereunto subscribe my name this 18th day of April A. D.. i921.

NOEL H. LYSONS. 

